docs: def get_config():
      """
      This load some configuration from the ``.travis.yml``, if file is present,
      ``doctr`` key if present.
      """
      p = Path('.travis.yml')
      if not p.exists():
          return {}
      with p.open() as f:
          travis_config = yaml.safe_load(f.read())
  
      config = travis_config.get('doctr', {})
  
      if not isinstance(config, dict):
          raise ValueError('config is not a dict: {}'.format(config))
      return config